Wilwood 140-18161-DR Forged Narrow Superlite 4R Rear EPB Big Brake Kit 12.88" SRP Red 6-Lug

The Wilwood 140-18161-DR is a Forged Narrow Superlite 4R (FNSL4R) Rear Electronic Parking Brake Big Brake Kit engineered specifically for 1971–1991 Chevrolet K5 Blazer, K10, and GMC K15/K1500 6-lug 4x4 platforms. This kit delivers a serious big brake upgrade for classic truck rear axles that demand both high-performance stopping power and a reliable electronic parking brake solution.

At the heart of this kit is Wilwood's FNSL4R four-piston forged caliper finished in red powder coat, paired with a 12.88" two-piece SRP (Street Performance) drilled and slotted rotor for superior heat dissipation and fade resistance. High-performance BP-10 compound brake pads deliver optimized and balanced braking force, making this kit an ideal complement to front big brake upgrades on custom builds, show vehicles, and high-performance street machines.

Key Features:

• Electronic Parking Brake (EPB) System — eliminates mechanical parking brake cables with a high-torque static holding system
• Includes dedicated ECU, wiring harness, remote switch, and connectors for simplified installation and integration
• FNSL4R four-piston forged caliper in red powder coat finish
• 12.88" SRP drilled and slotted two-piece rotor for improved thermal capacity and bite
• BP-10 high-performance brake pad compound for consistent, fade-resistant braking
• 6-lug bolt pattern — engineered for 1971–1991 Chevrolet/GMC K-series 4x4 axles
• Significantly increased thermal capacity over factory drum brakes
• Ideal complement to upgraded wheels, tires, and suspension components

The Wilwood 140-18161-DR is a complete bolt-on rear brake kit designed to modernize the braking performance of classic 6-lug trucks and SUVs while preserving clean aesthetics under custom wheels. The SRP rotor finish and red caliper deliver both performance and visual appeal for show and street applications.